There has been open criticism of Michael Carrick's backroom staff appointments at Manchester United, which is one of the most important issues any manager has to address when joining a new club.

Using my experience of that situation, I want to try to explain his thinking with the people he has brought in since he was named interim head coach, and how I believe what he has done can only be viewed as sensible. It's certainly a long way removed from the accusation that he has just brought in a bunch of his mates.

Michael's aim at United is the same as every manager when you first arrive in a job. You want to establish quickly a clear and defined alignment between yourself and the different football departments within the organisation that you have just inherited.

You have to be clear on your objectives and set certain principles in the first few days - like a work ethic, for example - that are non-negotiable and must be made absolutely clear to players and staff members who have not worked with you before.

Building a strong base with everyone pulling in the same direction takes time and, initially, it can lead to some forms of confrontation with existing members of the playing and coaching staff.